Explosive-engine.



Patented luly I0, |900.

c. n. D,Manen-Bmw.V

EXPLDSIVE ENGINE. f (Application tiled Sept. 9, 1899.)l

(llo Model.)

Y UNITED STATES PATENT OFFICE CARL R. DAELLENBACH, OF PARK'GATE, PENNSYLVANIA.

ExPLoslvE-ENGINE.

SPECIFICATION forming part of LettersPatent No. 653,379, dated July 10, 1900. Application filed September 9, 1899. Serial No. 729,970. (No model.)

T0 coll whom. t may concern:

Be it known that I, CARL R. DAE'LLENBACH, a citizen of the United States, residing at Park Gate, in the county of Beaver and State of Pennsylvania, have invented new and useful Improvements in Explosive-Engines,of which the following is a specification.

My invention relates to explosive-engines, and has for its general object to provide an explosive-engine in which a strong current of air is caused to pass through the piston-cylinder subsequent to au explosion and precedent to the admission of fuel, whereby all products of combustion and fire are expelled from the cylinder and danger of back explosions, which destroy the steady motion of an engine, is removed.

Another object is to provide an explosiveengine possessing the characteristics above mentioned and adapted to exhaust without noise.

Another object is to provide an explosiveengine of the kind stated in which the piston alone is adapted to control the inlet and exhaust ports of the cylinder and may be made very light, so as to avoid vibration when the engine is running at a high rate of speed.

With the foregoing in mind the invention will be fully understood from the following description and claims when taken in conjunction with the annexed drawing, in which the figure is a longitudinal section of an engine constructed in accordance with my invention.

vReferring by letterf to the said drawing, vA is the bed of the engine; B, the crank-shaft; C, the piston-cylinder; D, the piston, and E the rod connecting the piston and the crank a of shaft B. The cylinder has a plain bore b to receive the correspondingly-shaped piston and is provided with the usual waterjacket c. It is also provided with an inletport d and one or more exhaust-ports e, the same being arranged in the same transverse plane and at about the distance illustrated apart. The port d is designed to effect communication between the interior of the cylinder and a pipe F, which is connected at its inner end to the cylinder and has its outer end open to the atmosphere, while the port or ports e have for their purpose to simultaneously effect communication between the inequipped with a band-pulley, (not shown,) and may be driven from a suitable motor (not shown) or from the shaft B of the engine, as desired.

M is a pipe for feeding gas or explosive mixture to cylinder C. This pipe M is connected to the air-pipe F at a point adjacent to the cylinder and containsa valve N for controlling the passage of gas, explosive mixture, or other fuel to the cylinder. seated and normally held on its seat by a springfand is designed to be opened immediately before the piston on its inward stroke closes the port d by the mechanism shown partly in full lines and partly in dotted lines or by any other suitable mechanism. The mechanism illustrated comprises a strap f on the valve-stem f2 and an eccentric fixed to the crank-shaft B and arranged with the said strap.

During the operation of the engine the exhaust-fan I is rotated at a high rate of speed. `Consequently when the piston is moved vby an explosion into the position illustrated a strong current of air will be drawn through the piston-cylinder. VThis Vcurrent of air, `by virtue of the delector g en piston D, will take a tortuous course ,through the cylinder and in addition to effectually sweeping all of the products of combustion and sparks of fire Vtherefrom and removing the liability of a premature or back explosion will assist in cooling said cylinder. On the inward stroke of the piston and immediately before the port d is closed by the same the valve Nis opened, with the result that a full charge of gas or explosive mixture is drawn into the cylinder by the current of air. This chargeis trapped in the cylinder by the piston closing the inlet and exhaust ports and is compressed by the piston until ignited by suitable means. (Not shown.) Subsequent to the explosion the operation described is repeated.

In order to reduce the pressure in the cylinder prior to the opening of the port or ports e, and thereby avoid a sharp shooting noise when said port or ports e are uncov- The said valve isV IOO ered, I provide one or more (preferably a plurality) comparatively-minute ports t'. These ports i communicate with the pipe G and are arranged adjacent to the ports e and between the same and the inner end of the cylinder. From this it follows that the ports t' will be uncovered before the ports d e, with the result that the pressure in the cylinder following an explosion will be reduced prior to the opening of t-he ports d e and the passage of the current of air through the cylinder.

It will be appreciated from the foregoing that both the cylinder and piston of my improved engine are extremely simple and easy to manufacture and that the piston may be made very light, so as to avoid vibration.

It will also be appreciated that when the ports d e are opened the interior or chamber of the cylinder is swept with five or six times its volume of fresh air, with the result that products of combustion and sparks of fire are g efectually removed therefrom.

` to traverse the cylinder may be employed.

` I'Iaving thus described my invention, what I claim is 1. An explosive-engine comprising a cylinder, and a piston therein; the said cylinder i being provided with inlet and exhaust ports open to the air and arranged to be simultaneously uncovered by the piston and being also provided with a comparatively-minute exhaust-port arranged to be uncovered by the piston prior to the uncovering of the inletport, and means for causing a current of air to pass through the cylinder and ports when the latter are uncovered, substantially as specified.

2. An explosive-engine comprising a cylinder, and a piston therein; the said cylinder being provided with inlet and exhaust ports open to the air and arranged to be simultaneously uncovered by the piston, and being also provided with a comparatively-minute exhaust-port arranged to be uncovered by the piston prior to the uncovering of the inletport, a valve-controlled fuel-supply conduit connected with the inlet-port, and means for causing a current of air to pass through the cylinder and ports when the latter are uncovered, substantially as specified.

3. An explosive-engine comprising a cylinder and a piston therein; the said cylinder being provided with inlet and exhaust ports open to the air and arranged to be simultaneously uncovered by the piston and being also provided with a comparatively-minute exhaust-port arranged to be uncovered by the piston prior to the uncovering of the inletport, and a suction device connected with the exhaust-ports, substantially as specified.

4. An explosive-en gine comprisinga piston, a cylinder receiving the piston and having an inlet-port open to the air and connected with a source of fuel-supply and an exhaust-port, said inlet and exhaust ports arranged to be simultaneously uncovered by the piston, and also having a minute exhaust-port arranged to be uncovered by the piston prior to the uncovering of the inlet-port,a norm ally-closed valve controlling the fuel-supply, a suction device connected with the exhaust-ports, and means for opening the said valve, substantially as specified.

5. An explosive-engine comprisingapiston, a cylinder receiving the piston and having an inlet-port and an exhaust-port, said inlet and exhaust ports arranged to be simultaneously uncovered by the piston, an air-supply pipe connected with the inlet-port, a fuel-supply pipe connected with the air-pipe, a normallyclosed valve controlling communication between the fuel and air pipes, means for positively opening said valve at intervals, a fanchamber connected with the exhaust-port,and a suction-fan in said chamber, substantially as specified.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CARL R. DAELLENBACH. Witnesses:

WM. G. DUNCAN, SAMUEL PARKEa. 

